LabAdviser/314/Microscopy 314-307/TEM/ETEM: Difference between revisions
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'''Feedback to this page''': '''[mailto:labadviser@nanolab.dtu.dk?Subject=Feed%20back%20from%20page%20http://labadviser.nanolab.dtu.dk/index.php?title=LabAdviser/314/Microscopy_314-307/TEM/ETEM click here]''' | |||
''This section is written by DTU Nanolab internal if nothing else is stated.'' | |||
[[Category:314]] | |||
[[Category:314-Microscopy]] | |||
[[image:mikroskop 07.JPG|400x400px|right|thumb|Titan ETEM in building 314.]] | [[image:mikroskop 07.JPG|400x400px|right|thumb|Titan ETEM in building 314.]] | ||
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= FEI Titan 80-300 ETEM = | = FEI Titan 80-300 ETEM = | ||
The Titan ETEM is a transmission electron microscopy equipped with a field emission electron source, a monochromator and an aberration corrector on the objective lens. This gives the microscope a resolution of about 0. | The Titan ETEM is a transmission electron microscopy equipped with a field emission electron source (FEI X-FEG), a monochromator and an aberration corrector on the super-twin (S-TWIN) objective lens (CEOS CESCOR). This gives the microscope a resolution of about 0.8 Å in TEM mode. Other tecniques available on the microscope are scanning transmission electron microscopy (STEM, resolution 1.4 Å) with both high-angle annular dark-field (HAADF) and dark-field (DF)/bright-field (BF) detectors. On the analytical side, the microscope is equipped with Oxford X-Max 80T SDD X-ray detector for energy dispersive X-ray (EDS) spectroscopy and Gatan Tridiem 866 imaging filter allowing for electron energy-loss spectroscopy (EELS) and energy-filtered imaging (EF-TEM). For imaging, the microscope is equipped with Gatan US1000 cameras (2048x2048 px) before and after the energy filter, as well as a [[LabAdviser/314/Microscopy 314-307/TEM/ETEM/OneView|Gatan OneView camera]] for fast ''in situ'' acquisition (25fps full resolution 4k x 4k, 100fps 2k x 2k, 200fps 1k x 1k, 300fps 512 x 512).<br /> | ||
The microscope is equipped with a differential pumping system which allows gases to be introduced around the sample to a pressure on the order of 10 mbar (gas specie dependent). Several gases are permanently mounted on the system: Hydrogen, helium, methane carbon monoxide, nitrogen and oxygen. Additional gases and gas mixtures can be added as needed. Please contact Cen staff if you need other gases. [[image:Titan-etem-211113.jpg|400x400px|right|thumb|Schematic of the Titan ETEM differential pumping system.]]<br /> | The microscope is equipped with a differential pumping system which allows gases to be introduced around the sample to a pressure on the order of 10 mbar (gas specie dependent). Several gases are permanently mounted on the system: Hydrogen, helium, methane carbon monoxide, nitrogen and oxygen. Additional gases and gas mixtures can be added as needed. Please contact Cen staff if you need other gases. [[image:Titan-etem-211113.jpg|400x400px|right|thumb|Schematic of the Titan ETEM differential pumping system.]]<br /> | ||
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== Sample holders == | == Sample holders == | ||
All TEM sample holders available at DTU Nanolab building 314/307 are compatible with the Titan ETEM. The lab has holders for heating (furnace and MEMS-based), cooling, biasing and tomography. For information on the holder see [[LabAdviser/ | All TEM sample holders available at DTU Nanolab building 314/307 are compatible with the Titan ETEM. The lab has holders for heating (furnace and MEMS-based), cooling, biasing and tomography. For information on the holder see [[LabAdviser/314/Microscopy 314-307/TEM/Sample Holders|HERE]]. | ||
== Who may operate the Titan ETEM == | |||
In order to start training on the Titan ETEM you must by fully trained in the Tecnai TEM. Most of the basic operation on the Titan ETEM is the same as on the Tecnai with the added complexity of the aberration corrector and the monochromator.<br /> | |||
The training is conducted in two steps (as needed). In the first step, you will be trained on the special aspects of the microscope, i.e. the monochromator and the aberration corrector. In the second step, we will familiarize you with the differential pumping system and the gas inlet system.<br /> | |||
When you have demonstrated a high level of familiarity with the microscope you are allowed to book it via LabManager and use it 24/7.<br /> | |||
== Booking == | == Booking == | ||
All activities and booking of the Titan ETEM is coordinated by Thomas Willum Hansen. This is done in order to keep the microscope column as clean as possible and separate experiments with different gaseous species in time in order to avoid or minimize cross-contamination between experiments. | Booking on the ETEM is done by the users in accordance to the booking rules. Booking rules can be found in LabManager under "Documents" for the ETEM. | ||
It is important to follow the procedures described in the ETEM Userguide to ensure a clean system for each user and to minimize cross-contamination between experiments. | |||
<!-- All activities and booking of the Titan ETEM is coordinated by Thomas Willum Hansen. This is done in order to keep the microscope column as clean as possible and separate experiments with different gaseous species in time in order to avoid or minimize cross-contamination between experiments. --> | |||
''' | '''Further information''' | ||
<!-- give the link to the equipment info page in LabManager: --> | <!-- give the link to the equipment info page in LabManager: --> | ||
[http://labmanager | [http://labmanager.dtu.dk/function.php?module=Machine&view=view&mach=350 Titan ETEM in LabManager] | ||
= | = Calibration = | ||
*[[media:ETEM_collection-angles.xlsx |GIF collection angles (20220209)]] | |||
*Magnification calibration cameras | |||
*Convergence angles STEM | |||
= Process information = | = Process information = | ||
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Techniques: | Techniques: | ||
*[[LabAdviser/314/Technique/ | *[[LabAdviser/314/Microscopy 314-307/Technique/X-ray_spectroscopy|EDS/WDS]] | ||
*[[LabAdviser/314/Technique/EELS|EELS]] | *[[LabAdviser/314/Microscopy 314-307/Technique/EELS|EELS]] | ||
*[[LabAdviser/314/Technique/EFTEM|EFTEM]] | *[[LabAdviser/314/Microscopy 314-307/Technique/EFTEM|EFTEM]] | ||
*[[LabAdviser/314/Microscopy 314-307/Technique/Holo|Holography]] | |||
Processes: | Processes: | ||
*Oxidation/Reduction of metal particles | *Oxidation/Reduction of metal particles | ||
<br /> | |||
= Tips and Tricks = | |||
Here you can find some help to solve small issues on the microscope. Let us know, if you have other suggestions. | |||
*[[LabAdviser/314/Microscopy 314-307/TEM/Tips/MagicSwitch|Magic Switch is not working properly]] | |||
*[[LabAdviser/314/Microscopy 314-307/TEM/ETEM/OneView|Description OneView camera]] | |||
*[[LabAdviser/314/Microscopy 314-307/TEM/Tips/Aztec|Aztec connection problems]] | |||
*[[LabAdviser/314/Microscopy 314-307/TEM/Tips/GIF-apertures|GIF apertures are not responding]] | |||
*[[LabAdviser/314/Microscopy 314-307/TEM/Tips/HAADF-detector|HAADF detector doesn't give a signal]] | |||
*[[LabAdviser/314/Microscopy 314-307/TEM/Tips/No-STEM|No buttons for STEM acquisition]] | |||
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P. A. Crozier, T. W. Hansen, In situ and operando transmission electron microscopy of catalytic materials. ''MRS Bull.'' '''40''', 38-45 (2015). | P. A. Crozier, T. W. Hansen, In situ and operando transmission electron microscopy of catalytic materials. ''MRS Bull.'' '''40''', 38-45 (2015). | ||